TreeMap ceilingKey(K key) method in java

Let’s learn TreeMap ceilingKey(K key) method in java. TreeMap ceilingKey(K key) method in java ceilingKey(K key) method of TreeMap class returns the least key greater than or equal to the given key, or null if there is no such key. Syntax: public K ceilingKey(K key) Parameters: key the key Throws: ClassCastException – if the specified…

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